Valuables detection circuit design
Source: InternetPublisher:方世玉223 Keywords: Circuit design detection circuit BSP Updated: 2020/01/20
In order to meet the requirements of valuables detection, a tuned loop resonant amplifier is placed in the card. The card is hung on the valuables. The card emits a radio frequency signal. When it enters and exits the dormitory, it resonates with the secondary coil and the load voltage changes. , through the detection of the load, the entry and exit of personnel can be recorded. The circuit is shown in the figure.
- Cleverly use the electronic ballast of waste energy-saving lamps as power supply transformer
- Driving circuit of switching power supply field effect tube
- Brief Analysis of the Working Principle of AC Voltage Stabilizer Circuit
- A small and easy-to-make fast charger
- 3~15V 10A adjustable voltage regulated power supply
- Converting a lithium battery charging board into a constant voltage and current charger
- Car Audio Power Supply
- Circuit diagram explanation: simple switching power supply circuit diagram
- Battery powered switching circuit diagram
- Automatic charger made with LM3914
- Ultrasonic blind pathfinder circuit
- Inpatient pager circuit
- Straw returning to field crusher circuit
- Amplitude modulation circuit composed of MC1496
- Capacitive feedback oscillator circuit
- Multi-frequency resonant high-frequency power amplifier circuit for transmitter stage
- OTL low frequency power amplifier circuit
- common emitter amplifier circuit
- Various signal generator circuits
- Small current generator circuit